OT: LS1010 interface problems

Group,

I have added an LS1010 to my home rack to start playing with the SP track,
and have ran into an issue that I can not figure out. I have searched
Cisco's site and looked all over the Internet and can not find an answer.
I have 12 ATM-OC3 interfaces on the LS1010, and I am running code
(ls1010-wp-mz.121-27b.E3.bin) but from some reason I am not able to create
any sub interfaces. I look at the context help on the CLI and it appears to
allow them, but when I try to install them (even with mpls option) it give
me an error....

ATM(config)#int atm1/0/0.1 mpls
                         ^
% Invalid input detected at '^' marker.

I am thinking maybe this might be a hardware limitation, but I cant find any
docs on this. I look at the hardware on the device and this is what I
have....
=====================================================================
Slot Ctrlr-Type Part No. Rev Ser No Mfg Date RMA No. Hw Vrs Tst
EEP
---- ------------ ---------- -- -------- --------- -------- ------- ---

---
 0/0 155MM PAM       73-1496-03 A0 03656795 Jan 02 97 00-00-00   3.1     0
2
 1/0 155MM PAM       73-1496-03 A0 03657162 Jan 02 97 00-00-00   3.1     0
2
 1/1 155MM PAM       73-1496-03 A0 03657188 Jan 02 97 00-00-00   3.1     0
2
 2/0 ATM Swi/Proc    73-1402-04 A0 03657688 Jan 09 97 00-00-00   3.2     0
2
 2/1 FeatureCard1    73-1405-03 B0 03657468 Jan 09 97 00-00-00   3.2     0
2
DS1201 Backplane EEPROM:
Model    Ver. Serial   MAC-Address  MAC-Size RMA RMA-Number MFG-Date
-------- ---- -------- ------------ -------- --- ---------- ------------
LS1010      2 68004041 00E014247E00      256   0          0 Jan 13 1997
======================================================================
Then I searched the feature navigator and I am not able to find any thing
that refers to sub-interfaces on it.    I have Googled Ciscos site for any
thing I can think of, but I am lost at this point.   Does any one with ATM
or LS1010 experience have any ideas where I am going wrong?
Thanks
Chris
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